/*
 * Copyright (c) 2007 innoSysTec (R) GmbH, Germany. All rights reserved.
 * Original author: Edmund Wagner
 * Creation date: 22.05.2007
 *
 * Source: $HeadURL$
 * Last changed: $LastChangedDate$
 * 
 * 
 * the unrar licence applies to all junrar source and binary distributions 
 * you are not allowed to use this source to re-create the RAR compression algorithm
 *
 * Here some html entities which can be used for escaping javadoc tags:
 * "&":  "&#038;" or "&amp;"
 * "<":  "&#060;" or "&lt;"
 * ">":  "&#062;" or "&gt;"
 * "@":  "&#064;" 
 */
package com.github.junrar.rarfile;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

import com.github.junrar.io.Raw;

/**
 * Base class of headers that contain data
 * 
 * @author $LastChangedBy$
 * @version $LastChangedRevision$
 */
public class BlockHeader extends BaseBlock
 {
  public static final short blockHeaderSize = 4;

  private Log logger = LogFactory.getLog(BlockHeader.class.getName());

  private int dataSize;
  private int packSize;

  public BlockHeader()
   {

   }

  public BlockHeader(BlockHeader bh)
   {
    super(bh);
    this.packSize = bh.getDataSize();
    this.dataSize = packSize;
    this.positionInFile = bh.getPositionInFile();
   }

  public BlockHeader(BaseBlock bb, byte[] blockHeader)
   {
    super(bb);

    this.packSize = Raw.readIntLittleEndian(blockHeader, 0);
    this.dataSize = this.packSize;
   }

  public int getDataSize()
   {
    return dataSize;
   }

  public int getPackSize()
   {
    return packSize;
   }

  public void print()
   {
    super.print();
    String s = "DataSize: " + getDataSize() + " packSize: " + getPackSize();
    logger.info(s);
   }
 }
